Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5236640 | Process and calender for the production of packing sheets | Ralf Heiderich | 1993-08-17 |
| 5131323 | Packing sheet calender | — | 1992-07-21 |
| 5048411 | Calender, in particular for the production of packing sheets | — | 1991-09-17 |